Keep an eye on poems in Old English (7)
I believe the answer is:
oversee
'keep an eye on' is the definition.
(thesaurus)
'poems in old english' is the wordplay.
'poems' becomes 'verse' (I've seen this before).
'in' is an insertion indicator.
'old english' becomes 'oe'.
'verse' inserted within 'oe' is 'OVERSEE'.
(Other definitions for oversee that I've seen before include "Supervise, manage" , "Invigilate" , "Disregard" , "Keep an eye on like foreman" , "risk eyestrain?" .)